What is XML?
Extensible Markup Language (XML) is similar to HTML, but lets you create unique markup tags. All XML tags are defined by the programmer and different applications might interpret them differently.
The following is an example of a memo in XML:
<note>
<to>Bob</to>
<from>Joe</from>
<heading>Reminder</heading>
<body>Remember to take that XML tutorial online!</body> </note>
Notice that the tags are similar to those in HTML, but are customized for the purpose of creating a memo.
For more information, see W3Schools.com.